Sitemap: the requested URL (web page) doesn't exist
(yet)!

... But in the meantime you can get everything via the
menu at the left - which is also the site structure! If
you open the 'routes and roads' link, the menu on the
side expands. Everything is then linked from the visible
page.

In reality, this is a pretty small, basic, HTML-only
website so everything is linked from the side & bototm of any page. It'll probably stay that way for a good long while
so impossible to get lost sitemap or not... no excuse for not having it done, then!